BONFIGLIOLI A/11.90 B3 Clutch Brake 24 VDC 24 mm 22 W
The BONFIGLIOLI A/11.90 B3 clutch brake, identified by code A/11.90B3, is an electromagnetic clutch brake unit designed for industrial drive systems. It operates on 24 VDC, has a 24 mm bore, and uses a 22 W coil. The B3 designation defines the mounting configuration. This unit is suitable for conveyors, packaging machinery, and automation systems that require reliable holding and stopping torque.
Product Overview
Electromagnetic clutch brakes combine clutch and brake functions in a single unit. The clutch portion engages or disengages torque transmission, while the brake portion holds the load when the drive is stopped. The 24 VDC coil voltage is common in industrial control systems because it is safe and widely available. The 24 mm bore matches the shaft diameter for the specific application.
The 22 W coil power indicates the electrical consumption of the unit. The coil generates the magnetic field that engages the clutch or releases the brake, depending on the design. The clutch brake should be selected to match the torque requirements, speed, and duty cycle of the application.
Construction and Design
The clutch brake assembly includes a rotor, armature, coil, spring, and mounting hub. The rotor is connected to the driving shaft and the armature is connected to the driven shaft through the hub. The coil generates the magnetic field when energized. The spring applies the brake when power is removed. The friction surfaces are designed for smooth engagement and long wear life.
The 24 mm bore should match the shaft diameter with the appropriate fit. The B3 mounting configuration defines how the unit is secured to the machine. The coil wiring should be routed according to the documentation and protected from mechanical damage. The friction surfaces should be kept clean and free from oil or contamination.
Performance Characteristics
The clutch brake provides controlled torque transmission and reliable holding when the drive is stopped. The torque capacity depends on the unit size, the coil voltage, and the friction surface condition. The engagement and release times affect the dynamic behavior of the driven machine. The unit should be selected with an appropriate service factor for the duty cycle.
Frequent engagement and release can generate heat in the clutch brake. The duty cycle should be considered when selecting the unit and configuring the control system. The 24 VDC coil must be supplied with the correct voltage and current. Correct installation and maintenance help maintain stable performance and long service life.
Applications
The Bonfiglioli A/11.90 B3 clutch brake is suitable for conveyors, packaging machines, labeling equipment, automation systems, and general industrial drives. The clutch brake allows the drive to be engaged or disengaged and provides holding torque when stopped. This is useful in machines that require accurate stopping or holding of loads.
The unit should be integrated with a control system that provides the correct 24 VDC supply and switching sequence. Correct selection helps ensure reliable torque transmission and long service life.
Installation Guidelines
Installation should begin with a check of the nameplate data and a visual inspection of the clutch brake. The unit should be mounted with correct alignment between the driving and driven shafts. The 24 mm bore should match the shaft diameter. Mounting bolts should be tightened to the recommended torque. The coil wiring should be connected according to the documentation.
After installation, the clutch brake should be tested for engagement, release, and braking. The torque transmission should be verified under load. Any unusual noise, vibration, or overheating should be investigated before full service. Electrical connections should be made by qualified personnel following local regulations.
Maintenance Recommendations
Regular maintenance supports reliable performance and long service life. The friction surfaces should be inspected for wear and contamination. The coil and wiring should be checked for damage. The air gap between the armature and rotor should be checked according to the documentation. Any abnormal noise, vibration, or overheating should be addressed promptly.
The clutch brake should be kept clean and dry. In dusty or humid environments, additional protection may be needed. Maintenance records help identify trends and support planned servicing.
Selection Considerations
When selecting the A/11.90 B3 clutch brake, engineers should confirm the required torque, speed, bore diameter, duty cycle, and coil voltage. The 24 VDC supply must match the coil rating. The mounting arrangement must match the machine. The engagement and release times should suit the application requirements.
The unit should be selected with an appropriate service factor for starting loads, shock loads, and frequent engagement. Correct selection and installation help ensure reliable torque transmission and long service life.
Conclusion
The BONFIGLIOLI A/11.90 B3 clutch brake offers a reliable electromagnetic torque control solution with 24 VDC operation, 24 mm bore, and 22 W coil. Its construction supports controlled engagement and holding in conveyors, packaging machinery, and automation systems. With correct installation and maintenance, the unit provides dependable performance and long service life.
